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-rw-r--r--apt-pkg/packagemanager.cc195
1 files changed, 63 insertions, 132 deletions
diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
index b3c3d2591..d956c001e 100644
--- a/apt-pkg/packagemanager.cc
+++ b/apt-pkg/packagemanager.cc
@@ -292,7 +292,11 @@ bool pkgPackageManager::ConfigureAll()
if (List->IsFlag(Pkg,pkgOrderList::Configured)) continue;
if (ConfigurePkgs == true && SmartConfigure(Pkg) == false) {
- _error->Error("Internal error, packages left unconfigured. %s",Pkg.Name());
+ if (ImmConfigureAll)
+ _error->Error(_("Could not perform immediate configuration on '%s'. "
+ "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),1);
+ else
+ _error->Error("Internal error, packages left unconfigured. %s",Pkg.Name());
return false;
}
@@ -304,19 +308,26 @@ bool pkgPackageManager::ConfigureAll()
/*}}}*/
// PM::SmartConfigure - Perform immediate configuration of the pkg /*{{{*/
// ---------------------------------------------------------------------
-/* This routine trys to put the system in a state where Pkg can be configured,
- this involves checking each of Pkg's dependanies and unpacking and
- configuring packages where needed. */
+/* This function tries to put the system in a state where Pkg can be configured.
+ This involves checking each of Pkg's dependanies and unpacking and
+ configuring packages where needed.
+
+ Note on failure: This method can fail, without causing any problems.
+ This can happen when using Immediate-Configure-All, SmartUnPack may call
+ SmartConfigure, it may fail because of a complex dependancy situation, but
+ a error will only be reported if ConfigureAll fails. This is why some of the
+ messages this function reports on failure (return false;) as just warnings
+ only shown when debuging*/
bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
{
- if (Debug == true)
+ if (Debug)
clog << "SmartConfigure " << Pkg.Name() << endl;
VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
/* Because of the ordered list, most dependancies should be unpacked,
- however if there is a loop this is not the case, so check for dependancies before configuring.
- This is done after the package installation as it makes it easier to deal with conflicts problems */
+ however if there is a loop (A depends on B, B depends on A) this will not
+ be the case, so check for dependancies before configuring. */
bool Bad = false;
for (DepIterator D = instVer.DependsList();
D.end() == false; )
@@ -335,63 +346,39 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
VerIterator InstallVer;
SPtrArray<Version *> VList = Start.AllTargets();
+ // Check through each version of each package that could satisfy this dependancy
for (Version **I = VList; *I != 0; I++) {
VerIterator Ver(Cache,*I);
DepPkg = Ver.ParentPkg();
-
- if (!Bad) continue;
-
InstallVer = VerIterator(Cache,Cache[DepPkg].InstallVer);
- //VerIterator CandVer(Cache,Cache[DepPkg].CandidateVer);
-
- if (Debug) {
- if (Ver==0) {
- cout << " Checking if " << Ver << " of " << DepPkg.Name() << " satisfies this dependancy" << endl;
- } else {
- cout << " Checking if " << Ver.VerStr() << " of " << DepPkg.Name() << " satisfies this dependancy" << endl;
- }
-
- if (DepPkg.CurrentVer()==0) {
- cout << " CurrentVer " << DepPkg.CurrentVer() << " IsNow " << List->IsNow(DepPkg) << " NeedsNothing " << (DepPkg.State() == PkgIterator::NeedsNothing) << endl;
- } else {
- cout << " CurrentVer " << DepPkg.CurrentVer().VerStr() << " IsNow " << List->IsNow(DepPkg) << " NeedsNothing " << (DepPkg.State() == PkgIterator::NeedsNothing) << endl;
- }
-
- if (InstallVer==0) {
- cout << " InstallVer " << InstallVer << endl;
- } else {
- cout << " InstallVer " << InstallVer.VerStr() << endl;
- }
- //if (CandVer != 0)
- // cout << " CandVer " << CandVer.VerStr() << endl;
-
- cout << " Keep " << Cache[DepPkg].Keep() << " Unpacked " << List->IsFlag(DepPkg,pkgOrderList::UnPacked) << " Configured " << List->IsFlag(DepPkg,pkgOrderList::Configured) << " Removed " << List->IsFlag(DepPkg,pkgOrderList::Removed) << endl;
-
- }
-
- // Check if it satisfies this dependancy
+
+ // Check if the current version of the package is avalible and will satisfy this dependancy
if (DepPkg.CurrentVer() == Ver && List->IsNow(DepPkg) == true &&
!List->IsFlag(DepPkg,pkgOrderList::Removed) && DepPkg.State() == PkgIterator::NeedsNothing)
{
Bad = false;
- continue;
+ break;
}
+ // Check if the version that is going to be installed will satisfy the dependancy
if (Cache[DepPkg].InstallVer == *I) {
if (List->IsFlag(DepPkg,pkgOrderList::UnPacked)) {
+ /* Check for a loop to prevent one forming
+ If A depends on B and B depends on A, SmartConfigure will
+ just hop between them if this is not checked */
if (!List->IsFlag(DepPkg,pkgOrderList::Loop)) {
List->Flag(Pkg,pkgOrderList::Loop);
- Bad = !SmartConfigure(DepPkg);
- } else {
- Bad = false;
+ // If SmartConfigure was succesfull, Bad is false, so break
+ if (!(Bad = !SmartConfigure(DepPkg))) break;
}
} else if (List->IsFlag(DepPkg,pkgOrderList::Configured)) {
Bad = false;
+ break;
}
- continue;
}
}
+ /* If the dependany is still not satisfied, try, if possible, unpacking a package to satisfy it */
if (InstallVer != 0 && Bad) {
Bad = false;
List->Flag(Pkg,pkgOrderList::Loop);
@@ -409,12 +396,17 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
}
}
break;
-
} else {
Start++;
}
}
}
+
+ if (Bad) {
+ if (Debug)
+ _error->Warning(_("Could not configure '%s'. "),Pkg.Name());
+ return false;
+ }
static std::string const conf = _config->Find("PackageManager::Configure","all");
static bool const ConfigurePkgs = (conf == "all" || conf == "smart");
@@ -439,9 +431,8 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
}
// Sanity Check
- if (List->IsFlag(Pkg,pkgOrderList::Configured) == false && Debug)
- _error->Warning(_("Could not perform immediate configuration on '%s'. "
- "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),1);
+ if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
+ return _error->Error(_("Could not configure '%s'. "),Pkg.Name());
return true;
}
@@ -519,7 +510,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
}
bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate)
{
- if (Debug == true)
+ if (Debug)
clog << "SmartUnPack " << Pkg.Name() << endl;
// Check if it is already unpacked
@@ -537,11 +528,12 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate)
VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
- /* PreUnpack Checks: This loop checks and attemps to rectify and problems that would prevent the package being unpacked.
- It addresses: PreDepends, Conflicts, Obsoletes and DpkgBreaks. Any resolutions that do not require it should
- avoid configuration (calling SmartUnpack with Immediate=true), this is because any loops before Pkg is unpacked
- can cause problems. This will be either dealt with if the package is configured as a dependancy of
- Pkg (if and when Pkg is configured), or by the ConfigureAll call at the end of the for loop in OrderInstall. */
+ /* PreUnpack Checks: This loop checks and attempts to rectify and problems that would prevent the package being unpacked.
+ It addresses: PreDepends, Conflicts, Obsoletes and Breaks (DpkgBreaks). Any resolutions that do not require it should
+ avoid configuration (calling SmartUnpack with Immediate=true), this is because when unpacking some packages with
+ complex dependancy structures, trying to configure some packages while breaking the loops can complicate things .
+ This will be either dealt with if the package is configured as a dependency of Pkg (if and when Pkg is configured),
+ or by the ConfigureAll call at the end of the for loop in OrderInstall. */
for (DepIterator D = instVer.DependsList();
D.end() == false; )
{
@@ -624,33 +616,9 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate)
// See if the current version is conflicting
if (ConflictPkg.CurrentVer() == Ver && List->IsNow(ConflictPkg))
- {
- if (Debug && false)
- cout << " " << Pkg.Name() << " conflicts with " << ConflictPkg.Name() << endl;
-
- if (Debug && false) {
- if (Ver==0) {
- cout << " Checking if " << Ver << " of " << ConflictPkg.Name() << " satisfies this dependancy" << endl;
- } else {
- cout << " Checking if " << Ver.VerStr() << " of " << ConflictPkg.Name() << " satisfies this dependancy" << endl;
- }
-
- if (ConflictPkg.CurrentVer()==0) {
- cout << " CurrentVer " << ConflictPkg.CurrentVer() << " IsNow " << List->IsNow(ConflictPkg) << " NeedsNothing " << (ConflictPkg.State() == PkgIterator::NeedsNothing) << endl;
- } else {
- cout << " CurrentVer " << ConflictPkg.CurrentVer().VerStr() << " IsNow " << List->IsNow(ConflictPkg) << " NeedsNothing " << (ConflictPkg.State() == PkgIterator::NeedsNothing) << endl;
- }
-
- if (InstallVer==0) {
- cout << " InstallVer " << InstallVer << endl;
- } else {
- cout << " InstallVer " << InstallVer.VerStr() << endl;
- }
-
- cout << " Keep " << Cache[ConflictPkg].Keep() << " Unpacked " << List->IsFlag(ConflictPkg,pkgOrderList::UnPacked) << " Configured " << List->IsFlag(ConflictPkg,pkgOrderList::Configured) << " Removed " << List->IsFlag(ConflictPkg,pkgOrderList::Removed) << " Loop " << List->IsFlag(ConflictPkg,pkgOrderList::Loop) << endl;
- cout << " Delete " << Cache[ConflictPkg].Delete() << endl;
- }
-
+ {
+ /* If a loop is not present or has not yet been detected, attempt to unpack packages
+ to resolve this conflict. If there is a loop present, remove packages to resolve this conflict */
if (!List->IsFlag(ConflictPkg,pkgOrderList::Loop)) {
if (Cache[ConflictPkg].Keep() == 0 && Cache[ConflictPkg].InstallVer != 0) {
if (Debug)
@@ -682,28 +650,6 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate)
PkgIterator BrokenPkg = Ver.ParentPkg();
VerIterator InstallVer(Cache,Cache[BrokenPkg].InstallVer);
- if (Debug && false) {
- if (Ver==0) {
- cout << " Checking if " << Ver << " of " << BrokenPkg.Name() << " satisfies this dependancy" << endl;
- } else {
- cout << " Checking if " << Ver.VerStr() << " of " << BrokenPkg.Name() << " satisfies this dependancy" << endl;
- }
-
- if (BrokenPkg.CurrentVer()==0) {
- cout << " CurrentVer " << BrokenPkg.CurrentVer() << " IsNow " << List->IsNow(BrokenPkg) << " NeedsNothing " << (BrokenPkg.State() == PkgIterator::NeedsNothing) << endl;
- } else {
- cout << " CurrentVer " << BrokenPkg.CurrentVer().VerStr() << " IsNow " << List->IsNow(BrokenPkg) << " NeedsNothing " << (BrokenPkg.State() == PkgIterator::NeedsNothing) << endl;
- }
-
- if (InstallVer==0) {
- cout << " InstallVer " << InstallVer << endl;
- } else {
- cout << " InstallVer " << InstallVer.VerStr() << endl;
- }
-
- cout << " Keep " << Cache[BrokenPkg].Keep() << " Unpacked " << List->IsFlag(BrokenPkg,pkgOrderList::UnPacked) << " Configured " << List->IsFlag(BrokenPkg,pkgOrderList::Configured) << " Removed " << List->IsFlag(BrokenPkg,pkgOrderList::Removed) << " Loop " << List->IsFlag(BrokenPkg,pkgOrderList::Loop) << " InList " << List->IsFlag(BrokenPkg,pkgOrderList::InList) << endl;
- cout << " Delete " << Cache[BrokenPkg].Delete() << endl;
- }
// Check if it needs to be unpacked
if (List->IsFlag(BrokenPkg,pkgOrderList::InList) && Cache[BrokenPkg].Delete() == false &&
!List->IsFlag(BrokenPkg,pkgOrderList::Loop) && List->IsNow(BrokenPkg)) {
@@ -711,7 +657,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate)
// Found a break, so unpack the package
if (Debug)
cout << " Unpacking " << BrokenPkg.Name() << " to avoid break" << endl;
- /* */
+
SmartUnPack(BrokenPkg, false);
}
// Check if a package needs to be removed
@@ -724,43 +670,27 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate)
}
}
- // FIXME: Crude but effective fix, allows the SmartUnPack method to be used for packages that new to the system
- if (instVer != 0) {
- //cout << "Check for reverse conflicts on " << Pkg.Name() << " " << instVer.VerStr() << endl;
-
- // Check for reverse conflicts.
- if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
+ // Check for reverse conflicts.
+ if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
instVer.VerStr()) == false)
- return false;
+ return false;
- for (PrvIterator P = instVer.ProvidesList();
+ for (PrvIterator P = instVer.ProvidesList();
P.end() == false; P++)
CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
- List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
+ List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
- if (instVer->MultiArch == pkgCache::Version::Same)
- for (PkgIterator P = Pkg.Group().PackageList();
- P.end() == false; P = Pkg.Group().NextPkg(P))
- {
- if (Pkg == P || List->IsFlag(P,pkgOrderList::UnPacked) == true ||
+ if (instVer->MultiArch == pkgCache::Version::Same)
+ for (PkgIterator P = Pkg.Group().PackageList();
+ P.end() == false; P = Pkg.Group().NextPkg(P))
+ {
+ if (Pkg == P || List->IsFlag(P,pkgOrderList::UnPacked) == true ||
Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer &&
(Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall))
- continue;
+ continue;
SmartUnPack(P, false);
- }
-
- } else {
- VerIterator InstallVer(Cache,Cache[Pkg].InstallVer);
- //cout << "Check for reverse conflicts on " << Pkg.Name() << " " << InstallVer.VerStr() << endl;
-
- // Check for reverse conflicts.
- if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
- InstallVer.VerStr()) == false)
- return false;
-
- List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
- }
+ }
if(Install(Pkg,FileNames[Pkg->ID]) == false)
return false;
@@ -855,7 +785,8 @@ pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
if (ImmConfigureAll) {
/* ConfigureAll here to pick up and packages left unconfigured becuase they were unpacked in the
"PreUnpack Checks" section */
- ConfigureAll();
+ if (!ConfigureAll())
+ return Failed;
}
}
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